I haven't tried to use my TV outside yet, so I'm not as intimately familiar with the hook-ups outside. I know there's a coax outlet, but are there also Component (R,Y,W) plugs?
If not the TV will not utilize the outdoor speakers. Unless you run a 20' component cable across the ground, up behind the steps, through the door, in front of the bedroom door, up the side of the entertainment center, through the opening to the sheld and side of the radio / dvd player, and plug it in.
Craig & Lynn D'Angelo